Free Online AI Animated Subtitle Tool
Add animated captions to any video — no upload, no watermark, no sign up
Friendly
Free To Use
Watermarks
Animate Your Subtitles
Choose a video, generate captions with AI, pick an animation, then download the clip
How It Works
100% Private, your video never leaves your browser — transcription and rendering happen locally on your device using WebAssembly and WebGPU. Nothing is uploaded to our servers.
Whisper AI transcribes your audio to word‑level timestamps, then each word is animated with anime.js and rendered onto the video with FFmpeg — all in the browser, no account, no watermark, no server queue.
This runs on your own device, so it works best on shorter clips (reels, shorts). Longer videos take more time and memory.
Want to caption, trim, resize or generate videos automatically at scale? The Bannerbear API automates it for you — plug it into your app or no‑code workflow and generate thousands of videos on autopilot.
Start a Free Trial
Start a free trial with 30 API credits,
no credit card required